Make r the subject of the formula t = r/r-3
1 answer:
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Answer:
Solution: , 3.5, -15, 5
Not a solution: 129 and
Step-by-step explanation:
20 ≥ 5 + 3x
3x + 5 ≤ 20
3x ≤ 20 - 5
3x ≤ 15
x ≤ 5
x must be LESS than or EQUAL to 5